export class BallInstance {
  finger: Point //点击的位置坐标
  flag = false //false:倒序，true:正序
  hide_good_box = false //是否显示
  linePos: BezierPoints //运动轨迹
  bus_x = 0 //运动的x坐标
  bus_y = 0 //运动的Y坐标
  timer: number | null //定时器
}

export class Point {
  x: number
  y: number
}
export class BezierPoints {
  bezier_points: Point[]
}
